Improvement in machines for burnishing heels



UNITED .STATES PATENT CFFIGE.

GARDNER (IHAWKINS, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO MORRIS &IRELAND, OF SAME PLAGE.

IMPROVEMENT ION MACHINES FCR BURNlSHlNG HEELS, &c.

Specification forming part of Letters Patent No. 145,943, dated DecemberS0, 1873 application filed March 3, 1873.

To all whom z't may concern:

Be it known that I, GARDNER @.HAWKINS, of Boston, in the county ofSufolk and State of Massachusetts, have invented certain new and usefulImprovements in Boot and Shoe Burnishing Machines, of which thefollowing, taken in connection with the accompanying drawings, is aspecification:

My invention relates, in the first place, to the mode of operating theburnishing-tool; and it consists in imparting thereto a variablereciprocating motion, in a line tangent to the curve of the heel orsole, by means of an adjustable crank, so arranged as to be readily andeasily adjusted to any desired stroke without stopping the machine, incombination with a vibrating slide or slides and suitable devices foroperating the same, whereby the burnishingtool-may be readily made toconform to the rise and fall in the curved edge ofthe sole.

By the employment of avariable reciprocating burnisher-tool, as embodiedin my invention, a better result may be produced in less time than byany of the machines now in use, for the reason that the motion of theburnisher, being always under the control of the operator, can always beadapted to the requirements of the work in hand without loss of time,thereby imparting to said tool a short stroke when working around theheel and toe of the boot, or in the shank, and a long stroke whilepolishing the straighter portion from the shank to the toe.

My invention relates, in the second place, to a peculiar arrangement ofthe burnishing-tools, wherebyI am enabled to burnish the heel and finishthe edge of the fore part of the sole in the same machine, and at onejacking' of the shoe; and it consists in the use of two or moreburnishing-tools attached to the extremities of arms radiating from acommon center, about which they may be made to revolve, so as to bringeither of said tools into workin g position, the faces of said toolsbeing each formed and adapted to perform a given portion ofthe workas,for instance, one tool would be adapted to burnish the heel, another tothe shank, and still another to the toe and along the sides of the ball,the arms to which said tools are attached being rmly secured in positionafter each adjustment of the tools, so that they will not be displacedby the act of burnishing.

My invention relates, in the third place, to the construction of, andthe mode of attaching, the burnishing-tools and it consists in pivotingsaid tools to the carrying-arms atapoint nearly over the outer orbottomedge of the sole or heel, and in such a manner that said tools may bevibrated, within suitable limits, in a plane at right angles to the lineof reciprocation, the free end thereof being forced toward the work bymeans of a suitable spring. It further consists in attaching aburnishing-tool to the operating mechanism by means of a lever pivotedthereto, in such a manner that the tool may vibrate laterally to conformto the curve of the rand. A

In the drawings, Figure 1 is a perspective view of a machine embodyingmy invention. Fig. 2 is a plan ofthe same, and Figs. 3 and 4 representone of the burnishing-tools in detail.

A is the frame, to which the several parts of the machine are attached.B is a disk or handwheel, which forms the base of the jack for holdingthe shoe S, and by which the jack may be revolved to bring the severalparts of the edge of the sole and heel, successively, under the actionof the burnishing-tool. The wheel B is mounted in a suitable bearing inthe slide C, which is worked transversely by the screw C1, and rests inthe bed O2, which is fitted to slidein a direction at right angles tothe motion of G in suitablebearings formed in the fixed base D, andismovedtherein by screw D.

By this arrangement the shoe S may be moved into any desired position bysimply turning the screws O1 and D.

E E are swinging or vibrating guides, piv- A oted at F, and held inposition by the rod N, Fig. 1, which is connected to the lever ortreadle N', and is held up by a spring or counterweight. (Not shown inthe drawings.) Upon these slides E a cross-head, H, is mounted, and hasa reciprocating motion imparted thereto by the connecting-rod K, one endof which is attached to said cross-head, and the other end to thecrank-pin L in the hollow disk L. This crank-pin may be adjusted to, andheld at, any desired point between the center and circum ference of thedisk L by means ofthe lever M,

which acts through a device fully described in a patent to H. 1V.Bullard, dated May 7,1873, l

and numbered 126,442. This arrangement of the crank-pin enables thelength of the stroke of the cross-head II to be varied at will, with outstopping the machine. It, Figs. 1 and 4, is a reversible cross-arm,attached to the crosshead H in such a manner that it may be revolvedthereon, and secured in the desired position with either end down. Ateach extremity of the arm R I attach a seltadjusting bur nishing-tool,Hl or H2. This burnishing-tool is pivoted to the arm R at R1, Fig. 4,and is held in positiomby the spring R2. This tool maybe ofthe usualform 5 or it may be provided with. an adjustable guard-piece, P,Fig. 4,this guardpiece P being arranged, as shown, so as to project beyond theburnishing-surface of the tool, as represented at p, Figs. 3 and 4. Thisguardpiece is adjustable, and is held in position by the screw P.

The object of this guard-piece is to preserve the edge ofthe sole, andto form a bead.

Only two burnishing-tools are represented in the drawings, but a greaternumber may be used 5 and, for some styles of work, it will be n ecessaryto use at least three of different stylesone for the heel, one for theshank, and one for the toein which case there will be three arms, R,radiating at equal angles from a common center, around which they may berevolved.

T is a lever, pivoted to the cross-head H, so that it may vibratelaterally, to the outer end of which the cross-arms R are secured, andhaving` a spring, U, attached to its inner end, to control its position.By the use of this device the burnishingtool is enabled to vibratelaterally, and follow the curve of the rand during its reciprocation.

lll59943 IVhat I claim as new, and desire to secure by. Letters Patentof the United States, is

1. The combination, in a burnishng-m achine, of the cross-head H,arranged to move in a guide or guides, and carrying one or moreburnishing` -tools, the connecting-rod K, and movable crank-pin L', whensaid crank-pin is so arranged and operated that it may be adjusted tovary the stroke of the burnishingtool without stopping the machine,substantially as described.

2. In combination withthe cross-headH, carryin g one or moreburnishing-tools, the connectin g-rod K, andthe adjustable crank-'pinL', the vibrating slides E, arranged and operating substantially asdescribed.

3. In combination with the cross-head H, arranged to reciprocate upon aguide or guides, the tool-holder R, consisting of two or more armsradiating from a common center, by which it is secured to the cross-headand adjusted thereon to bring either of said arms into working position,substantially as described.

4. The burnishing-tool H2, pivoted to its earrier, substantially as setforth, so that it may be vibrated in a direction at right angles to thereciprocating motion, and provided with a spring for cont-rollin g thefree end thereof, substantially as described.

5. The lever T, controlled by the spring U, or its equivalent, incombination with the cross-head H and a burnishing-tool, substantiallyas described.

Executed at Boston, Massachusetts, this 27th day of February, 1873.

GARDNER C. HAWKINS. Witnesses G. E. WHITNEY,

S. A. Woon.

